205920140

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^2\times {\mathrm{2767}}^1$

素因数の和:2898

約数の個数: 36

約数和(自身を含む): 439796448

約数和(自身を除く): 233876308

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 2767, 3721, 5534, 7442, 11068, 13835, 14884, 18605, 27670, 37210, 55340, 74420, 168787, 337574, 675148, 843935, 1687870, 3375740, 10296007, 20592014, 41184028, 51480035, 102960070, 205920140]

約数ペア:

[(1, 205920140), (2, 102960070), (4, 51480035), (5, 41184028), (10, 20592014), (20, 10296007), (61, 3375740), (122, 1687870), (244, 843935), (305, 675148), (610, 337574), (1220, 168787), (2767, 74420), (3721, 55340), (5534, 37210), (7442, 27670), (11068, 18605), (13835, 14884)]